Me, too.
Mark 3: 28 “Assuredly, I say to you, all sins will be forgiven the sons of men, and whatever blasphemies they may utter; 29 but he who blasphemes against the Holy Spirit never has forgiveness, but is subject to eternal condemnation”— 30 because they said, “He has an unclean spirit.”
This is not an easy sin to commit and what Jesus is saying is that such a person "never has forgiveness" or will never accept the gift of life that Jesus is his savior.
The blasphemy against the Holy Spirit requires knowledge and belief that Jesus is the savior and that His works are the works of God and that His Word is God. It requires that the person knowingly twist the works and words of God in order to deny what the person knows is true. In short, he knowingly tries to cause his Brother to stumble away from God.
I don't believe that Jesus is saying that this man cannot be saved by God, I believe he is saying that he won't allow himself to be saved by God.
I am not familiar with Catholic doctrine, but i am willing to bet that the doctrine on mortal sin is an attempt to classify actions that might characterize or exemplify blasphemy of the spirit. In that this sin requires knowledge of the heart, its hard for me to say that certain actions in and of themselves would done by a man is "never has forgiveness".